“Too many pieces of music finish too long after the end.”
Igor Stravinsky

“I don’t know anything about music. In my line you don’t have to.”
Elvis Presley

“No sane man will dance.”
Cicero

“The are some experiences in life which should not be demanded twice from any man, and one of them is listening to the Brahms Requiem.”
George Bernard Shaw

“We don’t like their sound, and guitar music is on the way out.”
Decca Recording Company rejecting The Beatles, 1962

“Wagner’s music is better than it sounds.”
Mark Twain

“Mr. Wagner has beautiful moments but bad quarters of an hour.”
Giacchino Rossini

"One good thing about music, when it hits, you feel no pain."
Bob Marley

"Only sick music makes money today." 
Friedrich Wilhelm Nietzsche 

Music is a moral law. It gives soul to the universe, wings to the mind, flight to the imagination, and charm and gaiety to life and to everything.
Plato

Where words fail, music speaks.
Hans Christian Andersen

Music expresses that which cannot be said and on which it is impossible to be silent.
Victor Hugo